| Locality type: | Quarry |
| Classification |
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| Species: | 'Biotite' (not an IMA approved species) |
| Formula: | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Biotite data |
| Locality Data: | Click here to view Old Quarry Nature Center, Danbury, Fairfield County, Connecticut, USA |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 1581582 |
| Long-form Identifier: | 1:3:1581582:2 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Biotite |
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| 4.3km (2.7 miles) | ⓘNorth Street mall, Danbury, Fairfield County, Connecticut, USA |
| 5.4km (3.4 miles) | ⓘWestern Connecticut State University, Danbury, Fairfield County, Connecticut, USA |
| 5.9km (3.7 miles) | ⓘAgstone Company Limestone Quarry, Danbury, Fairfield County, Connecticut, USA |
| 8.9km (5.5 miles) | ⓘU. S. Route 7 Expressway (Danbury line to Iron Works District), Brookfield, Fairfield County, Connecticut, USA |
| 9.8km (6.1 miles) | ⓘRedding Glen, Redding, Fairfield County, Connecticut, USA |
| 12.0km (7.5 miles) | ⓘU. S. Route 7 Expressway (Brookfield Bypass), Brookfield, Fairfield County, Connecticut, USA |
| 15.8km (9.8 miles) | ⓘNew England Materials quarry, Monroe, Fairfield County, Connecticut, USA |
| 16.0km (9.9 miles) | ⓘInterstate 84 road cuts, Town of Southeast, Putnam County, New York, USA |
| 17.8km (11.1 miles) | ⓘTilly Foster Iron Mine, Town of Southeast, Putnam County, New York, USA |
| 18.1km (11.3 miles) | ⓘGreen's Farm locality (Roxbury garnet mine; Roxbury Falls garnet mine; Garnet Hill), Roxbury, Litchfield County, Connecticut, USA |
| References |
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